[j-nsp] Unit-ID's revisited / accessing committed configuration

[Benny Amorsen]

Curtis Call <ccall at juniper.net> writes:

> Junos 12.1 added new options for the <get-configuration>
> commit-scripts attribute, apply and apply-no-transients, that allow
> you to retrieve the post-commit-script configuration, and prior to
> Junos 12.1 you could always do something like <command> "show
> configuration | display xml | display commit-scripts" (be aware that
> the returned XML structure will be different than
> <get-configuration>), however, these work by running the configuration
> through the commit scripts again, so if you try to call them from a
> commit script you're liable to get a loop.

Ah clever idea, but you are right, it would loop. It could only work if
there was a way to get the actual configuration as it was applied after
the commit scripts of the last commit, without having to actually rerun
the commit script.

> Why not just have your commit script automatically add the unit number
> to the apply-macros. i.e. if the unit number is already present in the
> macro then use it for the logical interface, but if it is missing then
> figure out the first unused number, use it for the interface, and
> record it in the macro.

Yes that sounds like a workable solution.


Thank you!


/Benny